Control of endoaortic clamp position during Port-Access mitral valve operations using transcranial Doppler echography.
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Abstract
The technique of computer-aided transcranial Doppler echography for continuous control of cerebral perfusion during minimally invasive mitral valve operations using the Port-Access system is described. Temporary displacement of the endoclamp in the aortic arch (brachiocephalic trunk, left carotid artery) is followed by cerebral embolic signals and a sudden decrease in the blood flow velocity in the middle cerebral arteries.
Medical subject headings
- Aorta
- Cardiopulmonary Bypass
- Catheters, Indwelling
- Mitral Valve
- Ultrasonography, Doppler, Transcranial
- Ultrasonography, Interventional